Log sawmill for small dimension timber



Sept- 8 1953 l. sTAGG 2,651,335

LOG SAWMILL FOR SMAL-.L DIMENSION TIMBER Filed .March :51, 1952 h 2sheet-sheet 1 ATTORNEYS Spt. 8, 1953 LsTlAGG LOG SWMILL FOR SMALLDIMENSION TIMBER 2 Sheets-Sheet 2 Filed March 3l, 1.952

INVENTOR. IRVING STAYGG lATTORNEYS Patented Sept. 8, 1953 'o1-"FICE LOGSAWMILL FOR S TIMB MALL DIMENSION ER Irving Stagg, Wayne, Mich.Application March 31, 1952, Serial No. 279,562

It is the primary object of the invention to obtain a construction ofsaw mill which can be economically used in the cutting of lumber fromlogs which are small in diameter and irregular in shape. A great deal ofsound timber of this character is available but it does not pay to cutthe Same on a regular saw mill designed for logs of large dimensions.

I have therefore devised a construction in which the logs when onceplaced on the carriage are not shifted in position until all of thelumber is cut therefrom.

A further feature of the invention is that boards are simultaneouslysawed from opposite sides of the center or heart of the timber and thepart remaining after the final cuts is of a standard thickness such, forinstance, as four in-ches.

Still another feature of the invention is the construction of thecarriage and the means for mounting the logs thereon which expedites theperformance of the work.

As illustrated in the drawings:

Figure 1 is a side elevation;

Figure 2 is a plan view;

Figure 3 is an end elevation;

Fig. 4 is a plan view of the saw adjusting mechanism; and

Fig. 5 is a section on line 5-5, Fig. 4.

In general construction the mill comprises a frame A on which istravelingly mounted a narrow carriage B, and an arbor C mounted on theframe beneath the carriage extending transversely thereof has a pair ofcircular saws D and D adjustably mounted thereon on opposite sides ofthe carriage.

Carriage member F slidably mounted on the bottom and top rails B and B2.A rod G attached to the cross member F extends through a bearing H onthe end rail B-3 and a jack I of any suitable construction is alsomounted on this rail to ad- 2 Claims. (Cl. 143-105) frame and togetherholding the carriage in a xed plane with reference thereto. The carriagemay Vbe reciprocated on the frame by any suitable mechanism but, asillustrated, the -top rail'B has a rack member Lsecured thereto and agear M on a shaft M driven by any suitable mechamism (not shown) engagesthis rack to reciprocate the carriage.

Saw yacastz'ng mechanism N anl N journaled in bearings on the frame andeach having right-hand and left-hand screw threaded portions N2 and N3extending on opposite sides of the longitudinal center. Bars O and Oextend across between the Vshafts adjacent respectively to the saws Dand D and each has a fork O2 engaging a groove in the hub of the saw.The opposite ends of the bars O and O have nut portions O3 engaging thethreads of the shafts, and there may be re-cut to two by fours, four byfours, or any other size desired. Y

'.Ihe logs which may be economically cut with t 1s mach ne vary indiameter from six to twelve or fourteen inches and are of varyinglengths,

these dimensions being too small for economic cutting with a full sizedsaw mill.

What I claim as my invention is:

1. A log saw mill for cutting small dimension timber comprising a rigidframe having spaced top and bottom horizontal rails mounted thereon toextend parallel to each other in a vertical plane, a carriage formed bya rectangular open frame vhaving top and bottom vrails';travelinglyengaging thacorresponding rails-of said rigid frame, vertical end railsand an intermediate vertical rail adjustably engaging said top andbottom carriage rails, said intermediaterail and one of said end railshaving sharp dogs thereon for centrally engaging opposite ends of a log,the transverse dimension of all parts of said carriage within thevertical limit ofqthe opening in its frame being less than four inchesand being held by said rigid frame in a xed plane,ran^arbor extendingtransversely beneath said carriage :mountedgonfsaid rigid frame,` a pairof `circular sawsrmounted .on Ysaidrarbor on opposite sides of 'saidfcarriagemeans .forreciprccating said car- :riage 4t0 :carrytthe zlogvpastfsaid saws, and means zforadjustingfsaid sawsionfsaid arbor to|posiftionsgequally spaced 'on opposite sides of the cen- -trat planeioisaid. carriage for, simultaneous cuts -Wth an nner-:limit ,of:adjustment just clearing .thecarriage 2. The construction as in claim 1in which the adjustment means for the carriage includes a rod connectedto said intermediate rail and extending through a bearing on one of theend rails, and a jack on the latter rail for actuating said rod to|clamp the log and to lock it in clamped position.

IRVING STAGG.

'References Cited in"the"le o`f this patent UNITED STATES PATENTS NumberName Date '51,282 Ames Dec. 5, 1865 202,073 Thompson Apr. 2, 187852435145 Wilson July 5, 1881 436,420 Hodgson Sept. 16, 1890 "707,184Thomas Aug. 19, 1902 .1,180,842 Goetz Apr. 25, 1916 1,229,760 Krohn etalJune 12, 1917 vr1,506,529 .Jarosz Aug. 26,1924 .2,254,293 Kaehlert Sept.2, 1941 2,501,299 -Anderson Mar..21,-1950 2,595,879 @Pasquier May, 1952FOREIGN PATENTS Number Country Date '52,385 'Germany ...June '7, 1890

